Growth analysis of potted seedlings of satsuma mandarin (Citrus unshiu Marc.) under different light conditions and air temperatures

Taku Yano, Akiyoshi Morisaki, Kimiaki Matsubara, Shun Ichiro Ito, Kitano Masaharu

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

To establish cultural practice based on a consecutive growth model for potted 1-year-old seedlings of Satsuma mandarin (Citrus unshiu Marc.), growth analysis by classical and functional approaches was conducted under different light conditions and air temperatures over 2.5 years, and the active growth of potted seedlings in the greenhouse was investigated. Under the classical approach, the general change patterns of relative growth rate (RGR) and net assimilation rate (NAR) were hard to determine because of irregularities including quiescence of vegetative growth. Under the functional approach, plant mass modeled using linear, exponential, power-law, monomolecular, three-parameter logistic, four-parameter logistic (4L), and Gompertz functions showed significant correlations with the observed plant mass. 4L was the best model because it showed the highest r, and the lowest root mean square error and Akaike Information Criterion, so RGR and NAR were estimated by 4L. Analysis of the RGR components showed significant positive correlations between RGR and NAR. Analysis of covariance indicated the NAR costs for increasing RGR were lower in the greenhouse than in open culture; this was explained by differences in specific leaf area (SLA). Therefore, in greenhouse culture, growth was primarily enhanced by NAR as net photosynthesis and underpinned by SLA as a morphological trait improvement for the relatively low light intensity compared with open culture. A multiple regression model for NAR using the pooled data (n = 60) suggested solar radiation had a positive effect (P < 0.0001) and air temperature had a negative effect (P < 0.01) on NAR.

元の言語英語
ページ(範囲)34-42
ページ数9
ジャーナルHorticulture Journal
87
発行部数1
DOI
出版物ステータス出版済み - 1 1 2018

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satsumas
Citrus unshiu
net assimilation rate
air temperature
seedlings
leaf area
greenhouses
greenhouse production
plant cultural practices
growth models
vegetative growth
light intensity
solar radiation
photosynthesis

All Science Journal Classification (ASJC) codes

  • Plant Science
  • Horticulture

これを引用

Growth analysis of potted seedlings of satsuma mandarin (Citrus unshiu Marc.) under different light conditions and air temperatures. / Yano, Taku; Morisaki, Akiyoshi; Matsubara, Kimiaki; Ito, Shun Ichiro; Masaharu, Kitano.

:: Horticulture Journal, 巻 87, 番号 1, 01.01.2018, p. 34-42.

研究成果: ジャーナルへの寄稿記事

Yano, Taku ; Morisaki, Akiyoshi ; Matsubara, Kimiaki ; Ito, Shun Ichiro ; Masaharu, Kitano. / Growth analysis of potted seedlings of satsuma mandarin (Citrus unshiu Marc.) under different light conditions and air temperatures. :: Horticulture Journal. 2018 ; 巻 87, 番号 1. pp. 34-42.
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abstract = "To establish cultural practice based on a consecutive growth model for potted 1-year-old seedlings of Satsuma mandarin (Citrus unshiu Marc.), growth analysis by classical and functional approaches was conducted under different light conditions and air temperatures over 2.5 years, and the active growth of potted seedlings in the greenhouse was investigated. Under the classical approach, the general change patterns of relative growth rate (RGR) and net assimilation rate (NAR) were hard to determine because of irregularities including quiescence of vegetative growth. Under the functional approach, plant mass modeled using linear, exponential, power-law, monomolecular, three-parameter logistic, four-parameter logistic (4L), and Gompertz functions showed significant correlations with the observed plant mass. 4L was the best model because it showed the highest r, and the lowest root mean square error and Akaike Information Criterion, so RGR and NAR were estimated by 4L. Analysis of the RGR components showed significant positive correlations between RGR and NAR. Analysis of covariance indicated the NAR costs for increasing RGR were lower in the greenhouse than in open culture; this was explained by differences in specific leaf area (SLA). Therefore, in greenhouse culture, growth was primarily enhanced by NAR as net photosynthesis and underpinned by SLA as a morphological trait improvement for the relatively low light intensity compared with open culture. A multiple regression model for NAR using the pooled data (n = 60) suggested solar radiation had a positive effect (P < 0.0001) and air temperature had a negative effect (P < 0.01) on NAR.",
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